Installation and Operation Manual
46 47
COMPLAINT CAUSE SOLUTION
Unit does not operate.
•  The unit is turned to the off position, or the 
thermostat is satised.
•  Turn the unit to the on position and raise or lower 
temperature setting (as appropriate) to call for 
operation.
•  The LCDI power cord is unplugged.
•  Plug into a properly grounded 3 prong receptacle. 
See “Electrical Rating Tables” on Page 6 for the 
proper receptacle type for your unit.
•  The LCDI power cord has tripped (Reset 
button has popped out).
•  Press and release RESET (Listen for click. Reset 
button latches and remains in.) to resume operation.
•  The circuit breaker has tripped or the 
supply circuit fuse has blown.
•  Reset the circuit breaker, or replace the fuse as 
applicable. If the problem continues, contact a 
licensed electrician.
•  There has been a local power failure.
•  The unit will resume normal operation once power 
has been restored.
Unit Trips Circuit Breaker or  
Blows Fuses.
•  Other appliances are being used on the 
same circuit.
•  The unit requires a dedicated outlet circuit, not shared 
with other appliances.
•  An extension cord is being used.
•  Do NOT use an extension cord with this or any other 
air conditioner.
•  The circuit breaker or time-delay fuse is 
not of the proper rating.
•  Replace with a circuit breaker or time-delay fuse of 
the proper rating. See “Electrical Rating Tables” on 
Page 6 for the proper circuit breaker/ fuse rating for 
your unit. If the problem continues, contact a licensed 
electrician.
LCDI Power Cord Trips  
(Reset Button Pops Out).
•  The LCDI power cord can trip (Reset 
button pops out) due to disturbances on 
your power supply line.
•  Press and release RESET (Listen for click. Reset 
button latches and remains in.) to resume normal 
operation.
•  Electrical overload, overheating, or cord 
pinching can trip (Reset button pops out) 
the LCDI power cord.
•  Once the problem has been determined and 
corrected, press and release RESET (Listen for 
click. Reset button latches and remains in.) to 
resume normal operation.
NOTE:  A damaged power supply cord must be replaced with a new power supply cord obtained from the 
product manufacturer and must not be repaired.
Unit Does Not Cool/ Heat Room 
Sufciently, or Cycles On And Off 
Too Frequently.
•  The return/ discharge air grille is blocked.
•  Ensure that the return and/ or discharge air paths are 
not blocked by curtains, blinds, furniture, etc.
•  Windows or doors to the outside are open. •  Ensure that all windows and doors are closed.
•  The temperature is not set at a cool 
enough/ warm enough setting.
•  Adjust the Temperature control to a cooler or warmer 
setting as necessary.
•  The lter is dirty or obstructed.
•  Clean the lter, (see Routine Maintenance), or 
remove obstruction.
•  The indoor coil or outdoor coil is dirty or 
obstructed.
•  Clean the coils, (see Routine Maintenance), or 
remove obstruction.
•  There is excessive heat or moisture 
(cooking, showers, etc.) in the room.
•  Be sure to use exhaust vent fans while cooking or 
bathing and, if possible, try not to use heat producing 
appliances during the hottest part of the day.
•  The temperature of the room you are 
trying to cool is extremely hot.
•  Allow additional time for the air conditioner to cool off 
a very hot room.
Troubleshooting Tips










